Wellington OPP and Puslinch Fire and Rescue are investigating the cause of a fire at a trailer park near Aberfoyle.
Emergency crews responded to a blaze on Wellington Road 34 at around 3:30 am this morning and are still on site.
Police say four mobile homes were lost in the fire with the families being displaced. Victim Services are assisting the residents.
One person was transported to hospital with minor injuries.
Damage is currently being estimated at around $1Million.